Herderite and Amethyst Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
insoluble in common solvents
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.90-3.02
  
2.65
  
Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
  
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
  
Cleavage
Indistinct on {110}
  
Indiscernible
  
Mohs Hardness
5-5.5
  
7
  
Chemical Composition
CaBePO 4(F,OH)Ulrich Henn and Claudio C.
  
SiO2
  
Herderite and Amethyst Chemical Formula
While comparing Herderite and Amethyst physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Herderite and Amethyst chemical formula.
- Chemical formula of Herderite- CaBePO 4(F,OH)Ulrich Henn and Claudio C.
- Chemical formula of Amethyst- SiO2
Herderite and Amethyst Specific Gravity
Another important criteria for qualitative analysis of gemstones is Herderite and Amethyst Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Herderite and Amethyst Optical Properties during the identification of gemstone. Specific gravity of Herderite is 2.65 whereas that of Amethyst is 2.65.